Escola Universitària Politècnica. Max-SAT, smart cards.

Technical University of Catalonia. Unsupervised learning, probabilistic neural network, data mining.

University of Sussex. Natural language parsing, acquisition of lexical information from text, automatic generation of text from semantic representations.

University of Illinois. First-order probabilistic inference, text entailing, human-computer interaction.

Creator/Founder BotSpot.com, Executive Director Virtual Private Library

Instituto Militar de Engenharia - Brasil. Natural language processing, ontologies, semantic web, web-based distance learning.

University of Illinois. Cumulative (lifelong, multi-task) learning and evolution of language.

University of Colorado, Boulder. Empirical metaphor research, latent semantic analysis, information retrieval, co-author of "Speech and Language Processing" with Dan Jurafsky.

University of Wisconsin Oshkosh. Heuristic search, planning and re-planning, reinforcement learning.

Leibniz Laboratory. Multi-agent systems, planning and scheduling, distributed problem solving, cooperative robotics.